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https://issues.apache.org/jira/browse/SPARK-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143656#comment-14143656
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Nicholas Chammas commented on SPARK-3431:
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[~joshrosen] I can take a crack at this in the next week or so if it's a simple
matter of breaking up [this
line|https://github.com/apache/spark/blob/56dae30ca70489a62686cb245728b09b2179bb5a/dev/run-tests#L170]
into several invocations of {{sbt}} and parallelizing them with [GNU
parallel|http://www.gnu.org/software/parallel/].
Would that work?
I remember on the dev list we were discussing using some plugin to Maven to
parallelize tests, but I don't know much about that at this time.
> Parallelize execution of tests
> ------------------------------
>
> Key: SPARK-3431
> URL: https://issues.apache.org/jira/browse/SPARK-3431
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Reporter: Nicholas Chammas
>
> Running all the tests in {{dev/run-tests}} takes up to 2 hours. A common
> strategy to cut test time down is to parallelize the execution of the tests.
> Doing that may in turn require some prerequisite changes to be made to how
> certain tests run.
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